Device for use in introducing alpha fluid into alpha conduit for flowing materials



March 8, 1932. A. w. FoRsTER USE IN INTROD ING A FLUID INTO A DEVICE FORcoNDUIT TOlfiV FLOW A ERIALS Filed Feb. 20. O 2 Sheets-Sheet l INVENToR.y@ 201 M a' ATTORNEY'.

Matchs, 1932. A; w, FORSTER 1,848,122

USE IN INTRODUCING A F D INTO A DEVICE lFOR CONDUIT FOR FLOWING MATERIFiled Feb. 20, 1950" 2 SheGHs-Shee-l 2 INVENTOR.

ATTORNEY Patented Mar. 8, 1932 UNITED STATES PATENT OFFICE .AMIS-W.FOBSTEB, OF BROOKLYN, NEW' 'YORK DEVICE FOB, USE IN INTBODUCING A FLUIDINTO A CONDUIT FOB ILOWING y MATERIALS Application tiled February 20,1980. Serial No. @9.854.

This invention relates to devices for use in introducing a fluid into aconduit for flowingl 'materials, and, in its more particular aspects, todevices in the nature of nozzles forcegiient 6 guns and the like. Ineneral, an object of the invention is to provi e a device of thecharacter under consideration which is simple in construction,economical of manufacture and assembly, and 10 wherein the thoroughadmixture of a iuid with materials being forced through a conduit isfacilitated. y i

More particularly an object of the invention is to provide improvedmeans for facili- 16 tating the admixture of a fluid with materialsforced through a conduit by a suitable means such Vas a device in thenature of a cement n. guAnother object is to introduce a fluid into 20flowing materials at such point as will assure the most effectiveadmixture of the materialsl` Another object of the invention is toprovide improved means for imparting a mixin movement to the materialflowing throu the conduit of the nozzle of a device in t e nature of acement gun or the like.

Other objects of the invention will in part be obvious and will in partappear hereinafter.

The invention accordingly comprises an article of manufacture possessingthe features, properties, and the relation of elements which will beexemplified in the article ihereinafter described and the scope of theapplication of which will be indicated in the claims.

For a fuller understanding of the nature and objects of the inventionreference should be had to the following detailed description taken inconnection with the accompanying drawings, in which:

Figs. 5, 6, 7, 8, 9, l0, 11 and 12 are similar views of like portions ofstill. other devices embodying the invention.

In nozzle constructions of the type employed in connection with cement.glms and similar devices, it is customary to connect'the u hose and thenozzle tip by means of a metallic fcouplin formed to provide an annularcham,-

ber and aving means internal of this chamber providing a plurality ofchannels through which a liquid in the chamber may be introoo duced intothe interior thereof so as to be admixed with the materials flowingthrough the conduit of the nozzle. Amon the limiting factors in thesuccessful and e ective operation of cement guns and similar devices,are the requirements of speed of operation and of effectiveness ofmixing the introduced tliquid with the material flowing through the con#duit provided by the nozzle. The present invention contemplates therovision of features of construction, wheregy' the admixture of theintroduced liquid and the flowin material in a nozzle may be morereadily e ectuated; so as to assure better results and at the same timeto permit a more rapid operation. /I have found, for example, that ifthe liquid is introduced nearer the center of the flow, if the liquid isintroduced at points at varying distances from the center of the flow,or if the direction of flow isaltered to a certain extent adjacent thepoint of introduction of the liquid, a more thorough mixing of thematerials in proportion to the size of the conduit, the forces applied,and other constant factors, is obtained. These results may be a5accomplished in various ways in accordance with the invention, certainforms of construction permitting these results being particularlyexemplified.

As exemplified all of these forms are adapt- 90 ed to be embodied in thetype of nozzle exemplified in Fig. 1; and to be utilized in connectionwith the mixing of a liquid with one or another of such materials assand, rock wool, asbestos, ground cork, cotton powder, etc.l

The exemplified construction includes a hose 20 through which materialis forced toward the tip of the nozzle. This hose carries at its forwardend a ring 21 which is formed. 100

with screw-threads to Areceive the internal screw-threads at theY rearinner end of an annular, ordinarily metallic, member 22.

CTI

The member 22 is formed to' provide an annular chamber 23, the innerwall of which, in the present instance, is formed by a removablemetallic annulus 24 which is suitably formed with channels connectingthe chamber 23 to the interior of the conduit provided by the annulus;it being understood,

' of course, that suitable means' for introducing liquid to the chamber23 are provided.' One type of inlet is indicated at 24 in Fig. 2. At theforward end of the member 22 a` nozzle tip 25 is suitably mounted as bymeans of screw-threads, a suitable liner 25 being preferably carried inthe tip.

It is to be observed that the annulus 24 is so mounted that it canreadily be removed and replaced when worn, or when it is found'desirable to replace it with a differently constructed annulus, such,for example, as one of the annuli exemplified in Figs. 4 to 12,inclusive, either because the nozzle is' to be used for the applicationof a different type of material to the work, or for other reasons.

In the form of construction shown in Figs. 1, 2 and 3, the annulus 24 isformed on its inner surface with a plurality of internal proj ections26, which extend generally in the direction of iow of material throughthe conduit, but which are inclined somewhat with respect to the axis ofthe conduit so as to impart a rotary action to the material forcedthrough the conduit to facilitate the mixing of the introduced liquidwith the material. By eifectuating such a rotary action in the materialat this point, a thorough admixture of the liquid with the materialbefore the same is ejected from the tip of the nozzle, i's' assured. In.the present instance, the channels 27 connecting the chamber 23 and thecentral conduit, extend through the projections 26 and are inclined inthe direction of flow of the material, but they may extend radiallythereof, if desired.

In Fig. 4 there `is exemplified an annulus' 28, which is similar to thatshown in Fig. 3, except that besides channels 24 extending through theprojections 26, there are also provided channels 29 which extend to theinner surface of the annulus itself and insure the introduction ofliquid to that part of the material which flows between the projections26. In Fig. 5 there is shown an annulus 30 having projections 31extending parallel to the axis of the conduit andchannels 32 extendingradially of the annulus.

In order to obtain a particularly deep penetration of the material bythe liquid, it is in certain instances desirable to extend theprojections inwardly a considerable distance. The annulus 33,exemplified in Fig. 6, shows one such construction, wherein theprojections 34 extend more than half the distance between the innersurface of the annulus and its center, and have channels 35 extendingthe full length of the projection.

For the purpose of assisting the mixing by varying to a maximum extentthe forces within the conduit, it is in certain instances desirable toform various channels so that they extend in different angulardirections. The annulus' 36 in Fig. 7 is exemplified as formed withchannels 37 inclined forwardly in the direction of flow of the materialand with other channels 38 inclined rearwardly with respect to the iow.The annulus 36, moreover, is formed wijlrprojections 39, and certain ofthe channels 37 and 38 extend through these projections, while othersextend merely to the inner surface ofthe annulus.

In Fig. 8 there is exemplified an annulus 40 having a form of projection41, which slopes inwardly in the direction of flow so as to exert adifferent type of effect upon the flow of the material and toV create aparticularly effective mixing of the liquid with the material.

The annulus 42 exemplified in Fig. 9, is formed with projections 43,having side walls which diverge in the direction of flow, as well as aninner wall which is inclined inwardly.

The annulus 44 of Fig. 10 has projections 45 with inwardly convergingside walls. The annulus 46 in Fig. 11, has diamond-shaped projections47.

Fig. 12 shows an annulus 48 having projections 49 extending more thanhalf the distance between the inner surface of the annulus and itscentrlilXiS and formed with side walls which diverge-forwardly andconverge inwardly, .and VwithV an inner wall which slopes inwardly.Forwardly inclined channels 50 extend through these projections.

Since certain changes may be made in the above article and differentembodiments of the invention could be made without departing from thescope thereof, it is intended that all matter contained in the abovedescription or shown in the accompanying drawings shall be interpretedas illustrative and lnot in a limiting sense.

It is also to be understood that the following claims are intended tocover all of the generic and specific features of the invention hereindescribed, and all statements of the scope of the invention which as amatter of language might be said to fall therebetween.

Having described my invention, what I claim as new and desire to secureby Letters Patent is:

1. A device of the character described,-

2. A device of the character described, comprislng a conduit formaterial, means providlng an annular chamber surrounding said conduit,projections extending into said 3. A device of the character described,

comprising av conduit for material, means providing an annular chambersurrounding said conduit, projections extending into said conduitinternally of said' chamber, anda plurality of channels extending fromsaid .chamber through said projections to said conduit, said projectionsextending in a direction oblique to the axis of said conduit.

4, A device of the character described, comprising a conduit formaterials, an annular chamber surrounding said conduit, projectionsextending into said lconduit internally of said chamber, a plurality ofchannels extending from said chamber through said projections to said,conduit, said projections extending in a direction oblique to the axisof said conduit, and said channels extending in ra direction oblique tothe diameter of said conduit.

5. VA device of the character described, comprising a conduit formaterial, means providing an annular chamber surrounding said conduit,channels connecting said chamber and said conduit, and projectionsdisposed internally of said chamber, said projections vextendingobliquely to the axis of the conduit.

6. A device of the character described, comprising a conduit formaterial, means providing an annular chamber surrounding said conduit,channels connecting said chamber and said conduit, and means disposedinternally of said chamber to impart a rotary motion to material in saidconduit.

7. A device of the character described, comprising a conduit formaterials, means providing a chamber disposed externally of saidconduit, projections disposed internally of said chamber, and channelsconnecting said chamber and said conduit.

8. A device of the character described,

comprising a conduit for material, means providing a chamber disposedexternally of said conduit, projections disposed internally oi` saidchamber, the side walls of each projection diverging in the direction`of ow of the material in said conduit, and channels connecting saidchamber and said conduit.

10. A device of the character described,

comprising a conduit for material, means providing an annular chambersurrounding said conduit, channels connecting said chamber and saidconduit, and projections disposed internally of said chamber, certain ofsaid channels extending through said projections, and other of saidchannels extending to the interior of said conduit intermediate saidprojections.

11. A device of the character described,

comprising a. conduit for material, means providing an annular chambersurrounding said cc nduit, projections extending into said conduit adistance greater than half the radius ofthe conduit, and a plurality ofchannels extending from said chamber to said conduit through saidprojections.

12. A device of the character described, comprising a conduit formaterial, a portion of the wall of said conduit being formed by meansproviding an annular chamber about said conduit and connections betweensaid chamber and the interior of said conduit, said means being `formedwith internal projections extending in a direction oblique to the axisof said conduit.

13. A device of the character described,

lcomprising a hose member, a tip member,

and means interposed between the two for introducing a liquid into thematerial flowing therethrough, said interposed means comprising a memberformed with an internal annular recess and with an external connectionthereto, and a removable annulus within said member and adapted toprovide the inner wall ofa chamber within said recess, said annulusbeing formed with channels or the introduction of a liquid from saidchamber to material flowing through said annulus and being formed withproject-ions extending toward the axis of the annulus.v

14. A device of the character described, comprising a hose member, a tipmember, and means interposed between the two for introducing a liquid into the material flowing therethrough, said l interposed means comprisinga member formed with an internal annular recess and with an externalconnection thereto, and a removable Vannulus within said member andadapted to provide the inner walls of a chamber within said re- -e cess,said annulus being formed with channels for the introduction of a liquidfrom said chamber to material flowing through said annulus, and beingformed with means to deflect particles of material flowing through it. j

15. A -device of the character described, comprising a hose member, atip member, and means interposed between the two for introducing aliquid into the material flowing therethrough, said interposed meanscomprising anmember formed with an internal annular recess and with anexternal con'- nection thereto, and a removable annulus within saidmember and adapted to provide the inner wall of a chamber within saidrecess, said annulus being formed with channels for the introduction ofa liquid from said chamber to material flowing through said annulus andwith projections extending interiorly thereof, the said channelsextendin through said projections.

16. device of the character described, comprising a hose member, a tipmember, and means interposed between the two for 1 introducing a liquidinto the material lowing therethrough, said interposed means com- Iprising a member formed with an internal annular recess and with anexternal connection thereto, and a removable annulus within said memberand adapted to provide the inner walls of a chamber within said recess,

said annulus being formed with channels' for the introduction of aliquid from said chamberto material flowing through said annulus, andbeing formed with means to impart a rotary movement to the materialfiowin therethrough.

17. device of the character described, comprising a hose member, a tipmember,

and means interposed between the two for introducing a liquid into thematerial flowing therethrough, said interposed means comprising a memberformed with an internal annular recess and with an external connectionthereto, and a removable annulus within said member and adapted toprovide the inner wall of a chamber within said recess, said annulusbeing formed with channels for the introduction of a liquid from saidchamber to material flowing through said annulus and with projectionsextending interiorl)7 thereof, at least a portion oi said channelsextending through said projections.

18. A device of the character described, comprising an annulus, means todeliver material to one side of the conduit provided by said annulus ina direction axial thereof, means to conduct material away from the otherside of said annulus, said annulus be `ing formed with channels for thedelivery of a fluid to material flowing therethrough,

means provided at the exterior of said annulus for supplying a iuid tosaid channels, and means on the interior of said annulus for imparting arotary motion to the material flowing therethrough.

In testimony whereof I aiiix my signature.

ALOIS W. FORSTER.

